The Solar Impulse HB-SIA prototype aircraft, which has 12,000 solar cells built into its 64.3 meters (193 feet) wings, attempts its first intercontinental flight from Payerne to Rabat in Morocco with a few days for a technical stop and a change of pilot in Madrid. This flight will act as the final rehearsal for the aircraft's 2014 around-the-world flight. [Photo/Chinanews.com]